湖北罗田黄土岭长英片麻岩是与紫苏石榴黑云片麻岩共生的浅色片麻岩，成分上近于Ａ型花岗岩．受到浅混合岩化，钾交代现象显著．在斜长石与钾长石新成体接触处有清楚的交代净边结构，背散射电子探针分析表明，净边成分为钠长石（Ａｂ８９～９７）．在净边结构上，发现叠加倒转双晶．净边结构产生于长英片麻岩部分熔融的高温条件下，与整个大别地体隆升过程和Ａ型花岗岩的生成有成因联系 The loess gneisses from Huangtuling in Hubei Province are light-colored gneiss commensurate with Perilla pumice-black gneisses, and are similar in composition to A-type granites. By shallow mixing rock, potassium accountable significant phenomenon. There is a clear account of the net-edge structure at the new adult contact of plagioclase and K-feldspar. Backscattering electron probe analysis shows that the net margin component is albite (Ab89-97). In the net edge structure, found superimposed inverted twins. The net margin structure is produced under the high temperature of partial melting of gneiss in the Changying Formation and has a genetic connection with the uplift of the whole Dabie terrane and the formation of A-type granites